Here’s a timely reminder for all you would-be revelers out there: Be careful with your countdowns this New Year’s Eve. There will be a little extra time to bask in the glow of a retreating 2016 — or curse its name, as the case may be. Whatever your
Leap second: Why 2016 will be just a little longerChristian Science Monitor
How the heck do you even add a leap second to the year?Popular Science
Why 2016 is getting an extra “leap second”Vox
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Source: SIENCE